import java.util.Scanner;
class Number{
    char[] number2 = new char[]{'a','b','c'};
    char[] number3 = new char[]{'d','e','f'};
    char[] number4 = new char[]{'g','h','i'};
    char[] number5 = new char[]{'j','k','l'};
    char[] number6 = new char[]{'m','n','o'};
    char[] number7 = new char[]{'p','q','r','s'};
    char[] number8 = new char[]{'t','u','v'};
    char[] number9 = new char[]{'w','x','y','z'};

    char[][] numbers = new char[][]{number2,number3,number4,number5,number6,number7,number8,number9};
    public void put(char[] arr){
        StringBuilder stringBuilder = new StringBuilder();
        for (int i = 0; i < arr.length; i++) {

        }
    }
}
public class test2 {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String string = scanner.nextLine();
        char[] arr = string.toCharArray();
    }
}
